Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea5f38809e3181f…

MALICIOUS

PDF

73.5 KB Created: 2020-12-26 01:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6759973020f269c38a658c61a9d74497 SHA-1: 297967152af43dfb241b42f95a605907552c13e2 SHA-256: 2ea5f38809e3181f879afa0978600b014cfe305257eb8642aad93d9735fecff1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru', which is likely part of a phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is designed to trick users into downloading potentially unwanted software or visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/strik?utm_term=lightroom+free+macbook+air In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f92804821387.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/FmCnDhi/84017824249.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380867/normal_5fe0249be7728.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/sicifhf/zanumezuwotujupabikoduwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5f9281d30567a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5fa70b116b2b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421767/normal_5fcb5bd044fde.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/ejh3aib/the_wolfman_book_review.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/6ieWgQh/lighthouse_movie_trailer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/19b8072e-e158-4cb6-a960-b715748b2dc7/gong_xi_gong_xi_sheet_music.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E1 5228 bytes
SHA-256: d3979d75c7639a955027d524bd8d27f14a45c11e38a9e155f141871e7f81d054
font_01_sfnt_off0000f491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 10732 bytes
SHA-256: e29c32da3542a8c843d8034d0e9abadc6aa3e232712dad2a23331ac3ce0a93d7